You can always try some university libraries for Barker's book (my old one had it and that is how I managed to read it - although I finally located a battered old second hand copy out of sheer luck) or ask the man himself directly. He teaches at Aberystwyth University. It's a pretty good read - divided into individual chapters by those who opposed the Bright bill. Barker himself writes about seven or eight movies, running down the plot descriptions for those who have not seen them.
See No Evil is, as has been mentioned, probably the last word on the nasties though - hugely in depth and essential for any scholar on the subject.
In the mean time, any chance I can plug my own book Almar?
http://www.amazon.co.uk/Taboo-Breake...2583374&sr=1-1
Reviews have been thankfully quite positive!
http://www.kamera.co.uk/article.php/1082 http://www.digital-retribution.com/r...other/p047.php
Shameless plug over.